<template>
  <div>
    <div>【数据传递信息】</div>
    <div ref="target" class=" w-full h-full"></div>
  </div>
</template>

<script setup>
import { onMounted, ref, watch } from 'vue'
import * as echarts from 'echarts'
const props = defineProps({
  data: {
    type: Object,
    required: true
  }
});

// 1. 初始化 echarts 实例
const target = ref(null);
let mChart = null;
onMounted(() => {
  mChart = echarts.init(target.value)
  renderChart()
})
// 2. 构建 option 配置项
const renderChart = () => {
  const options = {
    xAxis: {
      show: false,
      type: 'value'
    },
    yAxis: {
      show: false,
      type: 'value'
    },
    series: [
      {
        type: 'graph',
        layout: 'none',
        coordinateSystem: 'cartesian2d',
        symbolSize: 26,
        z: 3,
        edgeLabel: {
          normal: {
            show: true,
            color: '#fff',
            textStyle: {
              fontSize: 14
            },
            formatter: function (params) {
              return params.data.speed
            }
          }
        },
        label: {
          normal: {
            show: true,
            position: 'bottom',
            color: '#5E5E5E',
          }
        },
        edgeSymbol: ['none', 'arrow'],
        edgeSymbolSize: 8,
        data: props.data.relations.map(item => {
          if (item.id !== 0) {
            return {
              name: item.name,
              category: 0,
              active: true,
              speed: `${item.speed}kb/s`,
              value: item.value
            }
          } else {
            return {
              name: item.name,
              value: item.value,
              symbolSize: 100,
              itemStyle: {
                normal: {
                  color: {
                    colorStops: [
                      {
                        offset: 0, color: '#157eff'
                      },
                      {
                        offset: 0, color: '#35c2ff'
                      }
                    ]
                  }
                }
              },
              label: {
                normal: {
                  fontSize: 14
                }
              }
            }
          }
        }),
        links: props.data.relations.map((item, index) => ({
          source: item.source,
          target: item.target,
          speed: `${item.speed}kb/s`,
          lineStyle: {
            normal: {
              color: '#12b5d0',
              curveness: 0.2
            }
          },
          label: {
            show: true,
            position: 'middle',
            offset: [10, 0]
          }
        }))
      },
      {
        type: 'lines',
        coordinateSystem: 'cartesian2d',
        z: 1,
        effect: {
          show: true,
          trailLength: 0,
          symbol: 'arrow',
          symbolSize: 12,
          color: 'rgba(55,155,255,0.6)',
          smooth: false,
        },
        lineStyle: {
          normal: {
            curveness: 0.2,
          }
        },
        data: [
          [{ coord: [0, 300] }, { coord: [50, 200] }],
          [{ coord: [0, 100] }, { coord: [50, 200] }],
          [{ coord: [50, 200] }, { coord: [100, 100] }],
          [{ coord: [50, 200] }, { coord: [100, 300] }],
        ]
      }
    ]
  }
  // 3. 将 option 配置项设置到 echarts 实例中
  mChart.setOption(options)
}

watch(() => props.data, () => {
  renderChart()
})

</script>

<style lang="scss" scoped></style>
